From bcfcf891563bcbf1d39a60275cabd695be162eee Mon Sep 17 00:00:00 2001
From: Paul Steckler
Date: Wed, 12 Jul 2017 11:16:09 -0400
Subject: format pairs of items for pr_depth to get alternating separators eval
 thunks once in prlist_sep_lastsep, make code clearer add typeclass debug
 output test

---
 test-suite/output/TypeclassDebug.out | 18 ++++++++++++++++++
 test-suite/output/TypeclassDebug.v   |  8 ++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 test-suite/output/TypeclassDebug.out
 create mode 100644 test-suite/output/TypeclassDebug.v

(limited to 'test-suite')

diff --git a/test-suite/output/TypeclassDebug.out b/test-suite/output/TypeclassDebug.out
new file mode 100644
index 0000000000..73369ab713
--- /dev/null
+++ b/test-suite/output/TypeclassDebug.out
@@ -0,0 +1,18 @@
+Debug: 1: looking for foo without backtracking
+Debug: 1.1: simple apply H on foo, 1 subgoal(s)
+Debug: 1.1-2 : foo
+Debug: 1.1-2: looking for foo without backtracking
+Debug: 1.1-2.1: simple apply H on foo, 1 subgoal(s)
+Debug: 1.1-2.1-2 : foo
+Debug: 1.1-2.1-2: looking for foo without backtracking
+Debug: 1.1-2.1-2.1: simple apply H on foo, 1 subgoal(s)
+Debug: 1.1-2.1-2.1-2 : foo
+Debug: 1.1-2.1-2.1-2: looking for foo without backtracking
+Debug: 1.1-2.1-2.1-2.1: simple apply H on foo, 1 subgoal(s)
+Debug: 1.1-2.1-2.1-2.1-2 : foo
+Debug: 1.1-2.1-2.1-2.1-2: looking for foo without backtracking
+Debug: 1.1-2.1-2.1-2.1-2.1: simple apply H on foo, 1 subgoal(s)
+Debug: 1.1-2.1-2.1-2.1-2.1-2 : foo
+The command has indeed failed with message:
+Ltac call to "typeclasses eauto (int_or_var_opt) with (ne_preident_list)" failed.
+Tactic failure: Proof search reached its limit.
diff --git a/test-suite/output/TypeclassDebug.v b/test-suite/output/TypeclassDebug.v
new file mode 100644
index 0000000000..d38e2a50e4
--- /dev/null
+++ b/test-suite/output/TypeclassDebug.v
@@ -0,0 +1,8 @@
+(* show alternating separators in typeclass debug output; see discussion in PR #868 *)
+
+Parameter foo : Prop.
+Axiom H : foo -> foo.
+Hint Resolve H : foo.
+Goal foo.
+Typeclasses eauto := debug.
+Fail typeclasses eauto 5 with foo.
-- 
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